CN103349800B - For collecting the system and method for exudate - Google Patents
For collecting the system and method for exudate Download PDFInfo
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- CN103349800B CN103349800B CN201310268181.1A CN201310268181A CN103349800B CN 103349800 B CN103349800 B CN 103349800B CN 201310268181 A CN201310268181 A CN 201310268181A CN 103349800 B CN103349800 B CN 103349800B
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Classifications
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- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
- A61M1/71—Suction drainage systems
- A61M1/78—Means for preventing overflow or contamination of the pumping systems
- A61M1/784—Means for preventing overflow or contamination of the pumping systems by filtering, sterilising or disinfecting the exhaust air, e.g. swellable filter valves
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- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
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- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
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- A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
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- A61M1/36—Other treatment of blood in a by-pass of the natural circulatory system, e.g. temperature adaptation, irradiation ; Extra-corporeal blood circuits
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- A61M2205/00—General characteristics of the apparatus
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- A61M2206/00—Characteristics of a physical parameter; associated device therefor
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7287—Liquid level responsive or maintaining systems
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Abstract
The present invention is the system and method for collecting exudate.A kind of Reduced pressure treatment system comprises the porous pad (122) that is arranged on tissue site and has the tank (142) of collecting chamber (166), entrance (152) and outlet (156).Entrance (152) is fluidly connected to porous pad (122).Reduced pressure source (134) is fluidly connected to the outlet (156) of tank, and the fluid from tissue site can be drawn in collecting chamber (166).Hydrophobic filter (160) is arranged near outlet (156) to prevent liquid from leaving collecting chamber (166) by outlet.Deflection plate (210) is arranged in tank (142) and blocks too early to prevent hydrophobic filter (160) to produce zigzag path between inlet and outlet.
Description
The application is the applying date is on February 27th, 2009, and application number is " 200980102113.X ", and denomination of invention is the divisional application of the application of " for collecting the system and method for exudate ".
Invention field
The present invention relates generally to tissue therapy system and particularly relate to the system and method for collecting exudate.
The description of association area
Clinical research and practice show, and are providing decompression can strengthen and accelerate the neoblastic growth of tissue site near tissue site.The application of this phenomenon has many kinds, but being applied in process wound of decompression is successful especially.This process (being commonly referred to " negative pressure wound treatment " in medical circle, " decompression treatment " or " vacuum-therapy ") provides many benefits, and benefit comprises the granulation tissue healing faster and increase and formed.Usually, reduce pressure and be applied to tissue by porous pad or other manifoldings.Porous pad comprises cell (cell) or aperture, and decompression can be assigned to tissue by this cell or aperture, and guides the fluid from tissue aspiration.Porous pad is often incorporated in the dressing with other components promoting treatment.
Fluid or exudate are collected in tank usually to dispose or to analyze.Such collecting tank should separation of the fluid be retained in tank with the air oozed out in logistics to make fluid, allows to discharge too much air simultaneously.Meet these many methods required to be known in the art, and hydrophobic filter is modal solution.In fact, many exudate tanks are disposable units, and low cost is important Consideration with being easy to manufacture.Structure complicated in tank and unnecessary parts are less desirable.Optimize hydrophobic filter to make flow of dried air maximum, maintain acceptable fluid-blocking (fluidblockage) simultaneously, this allows small size and makes cost minimum.
General introduction
The problem presented by existing collecting tank is solved by the exemplary embodiment of system and method described herein.In an exemplary embodiment, provide a kind of Reduced pressure treatment system (reducedpressuretreatmentsystem).Reduced pressure treatment system comprises the porous pad being arranged on tissue site and the tank with collecting chamber, entrance and exit.Be connected to porous pad inlet fluid.Reduced pressure source is fluidly connected to the outlet of tank so that decompression is delivered to collecting chamber and tissue site, and the fluid from tissue site is drawn in collecting chamber.Fluid-air separator combines to prevent liquid from leaving collecting chamber by outlet with outlet.Deflection plate (baffle) be arranged in tank with the liquid rotating making to enter tank to and prevent too early block liquid-air separator.
One aspect of the present invention provides a kind of Reduced pressure treatment system, and it comprises:
Manifold, it is arranged on tissue site;
Tank, it has collecting chamber, entrance and exit, is connected to described manifold described inlet fluid;
Reduced pressure source, its outlet being fluidly connected to described tank, with by reduced pressure delivery extremely described collecting chamber and described tissue site, makes the fluid from described tissue site be drawn in described collecting chamber;
Fluid-air separator, itself and described outlet combine to prevent liquid from leaving described collecting chamber by described outlet; And
Deflection plate, its be arranged in described tank with the liquid rotating making to enter described tank to and prevent from blocking described fluid-air separator too early.
In certain embodiments, described deflection plate can produce zigzag path between described entrance and described outlet.
In certain embodiments, described deflection plate can stop the sight line between the drop forming region of described tank and described outlet.
In certain embodiments, described deflection plate can be sieve.
In certain embodiments, described deflection plate can comprise deflecting plates, and described deflecting plates is at described fluid-air separator downward-extension.
In certain embodiments, described outlet and described fluid-air separator can be arranged in the exit wall of described collecting chamber.
In certain embodiments, described deflection plate can comprise deflecting plates, when described deflecting plates is arranged in described tank, described deflecting plates relative to the liquid water horizontal line of described tank at angle to guide the fluid contacting described deflecting plates to leave described exit wall.
In certain embodiments, described deflection plate can comprise deflecting plates; And at least one raised member can be arranged on described deflecting plates to make the bubbles burst formed when fluid enters described collecting chamber.
In certain embodiments, described fluid-air separator can be hydrophobic filter.
In the embodiment that another is exemplary, provide a kind of collecting tank for using together with Reduced pressure treatment system.Tank comprises collecting chamber, is suitable for fluidly being connected to the entrance of tissue site and being suitable for by the outlet being fluidly connected to Reduced pressure source.Fluid-air separator is arranged near outlet, and deflection plate be arranged in tank with the liquid rotating making to enter tank to and prevent too early block liquid-air separator.
In certain embodiments, described deflection plate can produce zigzag path between described entrance and described outlet.
In certain embodiments, described deflection plate can stop the sight line between the bubbles burst region of described tank and described outlet.
In certain embodiments, described deflection plate can be sieve.
In certain embodiments, described deflection plate can comprise deflecting plates, and described deflecting plates is at described fluid-air separator downward-extension.
In certain embodiments, described outlet and described fluid-air separator can be arranged in the exit wall of described collecting chamber.
In certain embodiments, described deflection plate can comprise deflecting plates, when described deflecting plates is arranged in described tank, described deflecting plates relative to the liquid water horizontal line of described tank at angle to guide the fluid contacting described deflecting plates to leave described exit wall.
In certain embodiments, described deflection plate can comprise deflecting plates; And at least one raised member can be arranged on described deflecting plates to make the bubbles burst formed when fluid enters described collecting chamber.
In the embodiment that another is exemplary, provide a kind of collecting tank for using together with Reduced pressure treatment system.Tank comprises collecting chamber and is arranged on and enters room on described collecting chamber.Enter room to comprise by entering the opening and blind end (closedend) that wall (entrywall) defines.Enter room and also comprise the base plate (floor) making to enter room and collecting chamber and separate, base plate has and allows to enter the hole (aperture) communicated between room with collecting chamber.Entrance is arranged on and enters the entering on wall of room, and entrance is suitable for fluidly being connected to tissue site.Outlet communicates with collecting chamber and is suitable for fluidly being connected to Reduced pressure source.Hydrophobic filter is arranged near outlet to prevent liquid from leaving collecting chamber by outlet.Provide the deflection plate that one has base and deflecting plates (deflectorplate), and base is removably arranged on by the opening entering room and enters indoor.The liquid rotating that the deflecting plates of deflection plate makes to enter room by entrance to and prevent from blocking hydrophobic filter too early.
In certain embodiments, described deflection plate can produce zigzag path between the described outlet entering room and described tank.
In certain embodiments, described deflection plate can stop described in enter sight line between the opening of room and the outlet of described tank.
In certain embodiments, described deflection plate can be sieve.
In certain embodiments, described deflecting plates can at described hydrophobic filter downward-extension.
In certain embodiments, what described outlet and described hydrophobic filter can be arranged on described collecting chamber enters the entering in the relative exit wall of wall of room with described.
In certain embodiments, described deflecting plates can relative to described base at angle to guide the fluid contacting described deflecting plates to leave described exit wall.
In certain embodiments, described outlet and described hydrophobic filter can be arranged on described in enter the base plate of room under.
In certain embodiments, described hole can be groove.
In certain embodiments, at least one raised member can be arranged on described deflecting plates to make the bubbles burst formed when fluid enters described collecting chamber.
In certain embodiments, described deflection plate can stop described in enter sight line between the opening of room and the outlet of described tank; Described outlet and described hydrophobic filter can be arranged on described collecting chamber with described enter room to enter in the relative exit wall of wall and under the described base plate entering room; And described deflecting plates can at described hydrophobic filter downward-extension.
In the embodiment that another is exemplary, provide a kind of collecting tank for using together with Reduced pressure treatment system.Tank comprises collecting chamber, be suitable for by be fluidly connected to tissue site entrance, be suitable for fluidly being connected to the outlet of Reduced pressure source and being arranged on the fluid-air separator near outlet.Deflection plate is arranged in tank with the drop receiving the bubble of tank implosion to produce or spraying.
In certain embodiments, described deflection plate can be arranged between drop forming region and described outlet.
In certain embodiments, described bubble can in the drop forming region implosion of described tank; And described deflection plate can be arranged between described drop forming region and described outlet.
In the embodiment that another is exemplary, provide a kind of collecting tank for using together with Reduced pressure treatment system.Tank comprises collecting chamber and is arranged on and enters room on collecting chamber.Enter room to have by entering the opening and blind end that wall defines.Enter room and also comprise the base plate making to enter room and collecting chamber and separate, base plate has and allows to enter the hole communicated between room with collecting chamber.Entrance is arranged on and enters the entering on wall of room, and entrance is suitable for fluidly being connected to tissue site.Outlet is configured to communicate with collecting chamber and is suitable for fluidly being connected to Reduced pressure source.Fluid-air separator is arranged on to prevent liquid from leaving collecting chamber by outlet near outlet, and porous foam be arranged on enter indoor minimum with the bubble formation of the adjacent open end making to enter room.
In certain embodiments, described porous foam can produce the zigzag path for entering the liquid of room described in entering.
In certain embodiments, described porous foam can be the polyurethane foam of unlimited cell.
In still another embodiment, a kind of method for collecting the exudate from tissue site is provided.The method is included in generation decompression in collecting tank and is drawn to collecting tank with the exudate at self-organizing in future position.The fluid-air separator that collecting tank comprises outlet and combines with outlet.The method also comprises the minimal deposition of the protein made from the exudate on fluid-air separator.
In certain embodiments, make minimal deposition also can comprise and prevent deposition.
In certain embodiments, minimal deposition is made also can to comprise: to stop the sight line between the bubbles burst region of described collecting tank and described outlet.
In certain embodiments, minimal deposition is made also can to comprise: the zigzag path producing the exudate for entering described collecting tank.
In certain embodiments, minimal deposition is made also can to comprise: to make the exudate entering described tank turn to and leave described fluid-air separator.
With reference to accompanying drawing below and detailed description, other objects of exemplary, Characteristics and advantages will become obvious.
Accompanying drawing is sketched
Fig. 1 illustrates the front perspective view (frontperspectiveview) with the Reduced pressure treatment system of collecting tank and deflection plate according to exemplary embodiment.
Fig. 2 depicts the front perspective view of the tank of Fig. 1 and the decomposition of deflection plate;
Fig. 3 illustrates the back perspective view of the tank of Fig. 2 and the decomposition of deflection plate;
Fig. 4 depicts the back perspective view of the partial cross section of the tank of Fig. 2 and the decomposition of deflection plate, and cross section is intercept along the line 4-4 of Fig. 3;
Fig. 5 illustrates the front perspective view of the deflection plate of Fig. 2;
Fig. 6 depicts the front view of the deflection plate of Fig. 2;
Fig. 7 A illustrates the top view of the tank of Fig. 2;
Fig. 7 B depicts the tank of Fig. 2 and the partial cross sectional view of deflection plate, and cross section is intercept along the line 7B-7B of Fig. 7 A; And
Fig. 8 illustrates the deflection plate according to exemplary embodiment.
The detailed description of exemplary
In the following detailed description of some exemplary, with reference to the accompanying drawing forming a part herein, and show by way of example in the accompanying drawings and can implement concrete preferred embodiment of the present invention wherein.These embodiments are enough described in detail, to enable those skilled in the art implement the present invention, and should be understood that and can adopt other embodiments and make logical structure, machinery, electricity and chemical change, and do not deviate from the spirit or scope of the present invention.In order to avoid for enabling those skilled in the art implement details unnecessary embodiment described herein, this description may have been omitted some known to those skilled in the art information.Therefore, detailed description below should not understood in a limiting sense, and the scope of exemplary is only defined by claims.
As used herein, term " decompression " refers generally to the pressure less than the ambient pressure of the tissue site of being treated.As a rule, this decompression will be less than the atmospheric pressure residing for patient.Selectively, decompression can be less than the tissue site hydrostatic pressure relevant to tissue.Although term " vacuum " and " negative pressure " may be used for describing the pressure putting on tissue site, the actual pressure putting on tissue site reduces significantly can be less than usually relevant to perfect vacuum pressure minimizing.Decompression can start in the region of tissue site, produce fluid flowing.When hydrostatic pressure around tissue site is close to the decompression expected, flowing can be calmed down, and then keeps decompression.Unless otherwise indicated, otherwise the force value illustrated herein is gauge pressure.Similarly, the increase mentioning decompression is commonly referred to as the reduction of absolute pressure, and the reduction of decompression is commonly referred to as the increase of absolute pressure.
As used herein, term " tissue site " refers to and is positioned at any tissue or in any in-house wound or defect, include but not limited to, osseous tissue, fatty tissue, muscular tissue, nervous tissue, skin histology, vascular tissue, connective tissue, cartilage, tendon or ligament.Term " tissue site " can also refer to the region of any tissue that might not be wound or defect, but expects the region of the growth increasing or promote other tissue.Such as, reduced pressure tissue treatment maybe can be used in some tissue regions, to grow the other tissue can being gathered in the crops and migrate to another tissue location.
With reference to figure 1, comprise the conduit 112 with tissue site 114 fluid communication of patient according to the Reduced pressure treatment system 110 of one embodiment of the invention.Conduit 112 fluidly can be communicated with tissue site 114 by pipe fitting joint 118 and distributing manifold 122.Distributing manifold 122 can be by manifold mode, decompression can be dispensed to any material of tissue site 114, and it is can bio-absorbable or can not bio-absorbable.In one embodiment, distributing manifold 122 can be unlimited cell (open-cell) reticulated polyurethane foam.The door curtain made of cloth (drape) 128 can be placed on distributing manifold 122 and around the environmental seal of tissue site 114 to keep decompression at tissue site 114 place.
Conduit 112 is fluidly connected to Reduced pressure source 134.In one is implemented, Reduced pressure source 134 can be the drawdown pump or vacuum pump that are driven by motor.In another embodiment, Reduced pressure source can be the pump of manual activation, such as compressible membrane pump.In still another embodiment, Reduced pressure source 134 can be wall type suction inlet (wallsuctionport), the wall type suction inlet that such as can obtain in hospital and other medical facilities.
Reduced pressure source 134 can be housed in reduced pressure therapy unit 136, this reduced pressure therapy unit 136 can also comprise sensor, processing unit, alarm indicator, memorizer, data base, software, display unit and user interface, and it promotes decompression treatment to be applied to tissue site 114 further.In an example, sensor (not shown) can be arranged on Reduced pressure source 134 place or its near to determine the source pressure produced by Reduced pressure source 134.Sensor can communicate with processing unit, and processing unit is monitored and controlled the decompression of being carried by Reduced pressure source 134.Reduced pressure delivery to tissue site being discharged from tissue site by maintaining exudate, around tissue site, being accelerated blood flow to organizing and facilitating neoblastic growth by being pressed into tissue site by distributing manifold, create microstrain in tissue site thus, this have stimulated neoblastic growth.
Still with reference to figure 1, but be also fluidly connected between Reduced pressure source 134 and tissue site 114 referring to figs. 2 and 3, tank 142 to collect the exudate and other fluids drawn from tissue site 114.In the embodiment shown in Fig. 1-3, tank comprises peviform part 144 and cover 146.Cover 146 can by plane substantially and can mate with peviform part 144 exit wall 148 formed.Although peviform part 144 is formed with the peviform wall 150 producing crescent shape by comprising bending profile, peviform part 144 and cover 146 can form the tank of cylindrical, cube shaped, rectangular cubic or any other shape.It shall yet further be noted that tank 142 can not comprise peviform part and the cover of separation, but can by substantially overall hood-shaped one-tenth.
Tank 142 comprises and is fluidly connected to the entrance 152 of conduit 112, by the fluid-air separator 160 being fluidly connected to the outlet 156 of Reduced pressure source 134 and operatively coordinate to prevent liquid from passing through with outlet 156 tank 142 is left in outlet 156.Entrance 152 can be arranged on wall 178, and wall 178 is placed in the sunk area 180 of peviform part 144.In one embodiment, outlet 156 is arranged in exit wall 148, and fluid-air separator 160 to be arranged near outlet 156 and to be fixed to exit wall 148.Outlet 156 allows fluid communication between tank 142 and Reduced pressure source 134, makes can be maintained decompression in tank 142.This decompression can be transferred to tissue site by entrance 152, conduit 112, pipe fitting joint 118 and distributing manifold 122.Exudate and other fluids are drawn to tank 142 from tissue site 114 by decompression.Fluid-air separator 160 prevents the liquid be drawn in tank 142 from leaving tank 142 by outlet 156 and polluting Reduced pressure source 134.
In an exemplary embodiment, fluid-air separator 160 can be the hydrophobic filter preventing liquid from passing through via outlet 156.Selectively, fluid-air separator 160 can be the barrier system based on gravity, or comprise water-wetted surface with convenient fluid stream from the teeth outwards by time promote other equipment be separated of condensation or liquid and fluid stream.Other examples of fluid-air separator 160 can comprise the metal of sintering, the nylon of sintering maybe can make liquid and Fluid flow from or any other material that otherwise can prevent liquid from passing through simultaneously to allow gas to pass through or equipment.
More specifically referring to figs. 2 and 3, and also with reference to figure 4, in explained embodiment, tank 142 comprises collecting chamber 166, and collecting chamber 166 is as by the main reservoir of fluid collection in tank 142.Enter room 170 to be arranged on collecting chamber 166 and to comprise opening 172 and blind end 174.The blind end 174 entering room 170 is defined by wall 178.Entrance 152 can be arranged on wall 178, makes the main lumen of conduit 112 (primarylumen) be conducive to tissue site 114 with entering between room 170 and communicates.Enter room 170 and also comprise base plate 186, base plate 186 makes to enter room 170 at least partly and separates with collecting chamber 166.Although there is base plate 186, by entering the opening 172 of room 170 and by being arranged on the hole 190 in base plate 186, still allowing to enter fluid communication between room 170 and collecting chamber 166.As Fig. 3 and Fig. 4 explain, hole 190 is grooves, but it should be noted that hole can be any other hole communicated that hole, passage or improvement enter between room 170 with collecting chamber 166.
Although described entrance 152, outlet 156 above in detail and entered position and the shape of room 170, entrance 152, outlet 156 and enter the position of room 170, shape and general configuration and can change according to the shape of tank and configuration.
As disclosed herein, tank 142 is mainly used in collecting the exudate from tissue site 114.Exudate from the patient of a small amount of percentage ratio has unique chemistry and physical characteristic.When fluid enters tank, these characteristics promote bubble formation and bubble, and fluid can comprise the protein that can adhere to many hydrophobic filter films.Under normal circumstances, albuminous membranae blocks gradually, but when there is foam, albuminous membranae is increased the weight of.The existence of " exudate bubble " because of bubble occur suddenly time, make the fine droplet of the proteinaceous exudate of bag be atomized and depositional phenomenon is maximized.The small size of these drops limits the de-fluid effect (liquid-sheddingeffect) of hydrophobic filter, and promotes their rapid evaporation.Upon evaporation, protein residue thing is stayed on the surface of drop present position.When Residue buildup is on the surface of hydrophobic filter, which compromises filter capability and air-flow.After the part that only have collected tankage size, this can occur and block, this needs premature disposal tank and increases running cost.Under serious condition, filter can be completely plugged, and this causes system can not provide the treatment of expection.In egregious cases, blocking can cause filter film complete failure, makes the major requirement of separation of the fluid and air invalid and may pollute components downstream.
With reference to figure 2-6, Fig. 7 A and Fig. 7 B, deflection plate 210 is set to reduce the formation of protein bubble, the protein bubble formed is broken and the too early obstruction of the hydrophobic filter that makes to be arranged in tank 142 or other fluid-air separators 160 minimum.Deflection plate 210 comprises base 214 and deflecting plates 218, and base 214 has can by the cover (shroud) 222 be integrated and connected on deflecting plates 218.In another embodiment, cover 222 and can be connected to deflecting plates 218 by welding, bonding or any other connected mode.Raised member 226 can be arranged on deflection plate 210 to contribute to the bubbles burst making to be formed when liquid enters tank.Raised member 226 can be spike, such as show in Fig. 2, Fig. 5, Fig. 6 and Fig. 7 B those, or selectively, raised member 226 can be any other structure that ridge, rib, wedge, dome, projection maybe can make bubbles burst.In addition or selectively, deflecting plates 218 can also comprise surfactant coating to reduce the surface energy of bubble.
Although the deflecting plates 218 of explaining in fig. 5 and fig. is solid substantially, the miscellaneous part of deflecting plates 218 and deflection plate 210 can comprise hole, groove, passage or other holes.This some holes can be conducive to the gas transmission improved, but still provides and make proteins deposited minimum on fluid-air separator or prevent this proteins deposited required obstruction or deflection characteristic.In an exemplary embodiment, deflection plate can be sieve or can by sieve material construction.In another embodiment, deflection plate can comprise deflecting plates or be permeable or semi permeable miscellaneous part concerning gas flowing.
When assembled, the base 214 of deflection plate 210 is removably held by the opening 172 entering room 170.As Fig. 6 and Fig. 7 B explain, deflecting plates 218 can relative to base 214 at angle, makes to enter room and the fluid clashing into deflecting plates is diverted and leaves exit wall 148.When deflection plate 210 is installed in tank 142, deflecting plates can relative to the liquid water horizontal line of tank at angle.Liquid water horizontal line is when tank is positioned in substantially vertical position, the line represented by the top surface of the liquid be collected in tank 142 or plane.
More specifically with reference to figure 7, the path entering the fluid of tank 142 is schematically described by line 234.Fluid is by entrance 152 and enter room 170.Then, fluid passes through and is deflected plate 218 to be guided down through the hole 190 and opening 172 that enter room 170 under the cover of deflection plate 210.When fluid enters collecting chamber 166, the liquid in fluid stream relies on gravity to be pulled down the bottom being collected in collecting chamber 166.Gas in fluid stream can be pulled upwards to leave tank 142 at outlet 156 place around deflecting plates 218.
Deflection plate 210 produces and enters for fluid and move ahead by the zigzag path (such as, explaining as line 234) of tank 142.This zigzag path reduces and the too early obstruction of the fluid-air separator 160 substantially preventing the liquid because entering tank 142 from causing.In addition, deflection plate 210 deflecting plates 218 and optionally raised member 226 play the effect that prevents the protein bubble in fluid exudates from being formed or play the effect that bubble that obstruction formed arrives fluid-air separator 160.Deflection plate 210 also plays the effect stopping or substantially reduce the sight line (line-of-sight) entered between the opening 172 of room 170 and fluid-air separator 160.
When being installed in tank 142, the drop that the bubble that deflection plate 210 is configured to be received in tank implosion produces or spraying.In some cases, deflection plate 210 can be arranged on outlet 156 region that exudate bubbles burst occur interior with tank of tank 142, namely between bubbles burst region.In some cases, deflection plate 210 can be arranged between outlet 156 and drop forming region.Drop forming region is the position that the exudate drop produced because of bubbles burst is formed or falls.In some embodiments, the bubbles burst region of tank can be in identical position or close to each other with drop forming region.In other embodiments, bubbles burst region and drop forming region can be in different positions.Concerning the tank 142 of explaining in Fig. 1-6, Fig. 7 A and Fig. 7 B, bubbles burst region and drop forming region are entering in room 170 or close to the opening 172 and the hole 190 that enter room 170.
It should be noted that other modes existed for generation of entering the zigzag path of tank 142 for fluid.In one embodiment, the reticulated polymer foam of the porous of such as polyurethane foam can be arranged on and enter in room 170.The reticulated nature of foam makes the bubble formation that enters near the opening 172 of room 170 minimum, which has limited proteins deposited on fluid-air separator 160.Similarly, other foams or material can be arranged on to enter in room 170 or be arranged on and enter between room 170 and fluid-air separator 160 to prevent too early block liquid-air separator 160.Independent enter in the tank of room may not comprise, it is proteins deposited on fluid-air separator to prevent Anywhere that porous foam can be placed in tank.Preferably, the location of porous foam in tank should make foam in the drop forming region of tank or between bubbles burst region and outlet.
With reference to figure 8, illustrate the deflection plate 810 according to an exemplary.Be similar to deflection plate 210, deflection plate 810 also comprises base 814 and deflecting plates 818, but deflection plate 810 adopts drop stamping manufacture technics.Deflection plate 810 can use or can use together with other tanks together with being similar to the tank of tank 142.Deflection plate 810 is also by blocking sight line and in the outlet of tank and entrance, bubbles burst region, drop forming region with enter in the opening of room between at least one to produce zigzag path to operate.Like this, deflection plate 810 can prevent from blocking the fluid-air separator relevant to the outlet of tank too early.
A kind of method for collecting the exudate from tissue site is further provided according to the embodiment that exemplary.The method is included in collecting tank and produces decompression so that exudate is drawn to collecting tank from tissue site.Collecting tank comprises outlet and the fluid-air separator relevant to outlet.The method also comprises the minimal deposition that makes the protein from exudate on fluid-air separator or prevents this deposition.Make proteins deposited minimum or prevent proteins deposited can generation according to some different modes, described mode comprises by providing aforesaid deflection plate or porous foam herein.Like this, the exudate entering tank can be diverted and leave fluid-air separator.By to stop or the sight line substantially reduced between the bubbles burst region of collecting tank and outlet can make proteins deposited minimum or prevent proteins deposited further.Selectively or in addition, the zigzag path entering collecting tank for exudate can be produced.
Some embodiment in exemplary described herein can also comprise the mode of the probability reducing bubble formation, the fluid intake transition (fluidinlettransition) such as from conduit to can body.This fluid intake transition can be set up to have and make the fluid flow characteristics that hole is formed and bubble formation is minimum.In addition or selectively, some embodiments can also comprise the face coat of fluid-air separator, such as oleophobic property coating, when contacted protein bubble, this coating makes proteins deposited minimum.
Will be understood that, exemplary described herein can use and use together with the tank of any type, shape or size similarly together with the Reduced pressure treatment system of any type, shape or size.The position of entrance, outlet and fluid-air separator can also change according to specific tank pattern.Similarly, the geometry of deflection plate can be changed the profile or the configuration that meet tank as required.It shall yet further be noted that deflection plate is not limited to use together with Reduced pressure treatment system.Deflection plate can also with can use together with other medical collection tanks preventing the equipment of too early block liquid-air separator from benefiting.
From foregoing teachings, the present invention providing and there is significant advantage should be apparent that.Although the present invention only shows with some in its form, the present invention is limited just, but allows variations and modifications and do not depart from spirit of the present invention.
Claims (17)
1. the collecting tank for using together with Reduced pressure treatment system, described tank comprises:
Collecting chamber;
Enter room, it is arranged on described collecting chamber, the described room of entering has by entering the opening and blind end that wall defines, described in the room of entering also have make described in enter the base plate that room and described collecting chamber separate, described base plate has the hole entering described in permission and communicate between room with described collecting chamber;
Entrance, its be arranged on described in enter room enter on wall, described entrance is suitable for fluidly being connected to tissue site;
Outlet, it communicates with described collecting chamber and is suitable for fluidly being connected to Reduced pressure source;
Fluid-air separator, it is arranged near described outlet to prevent liquid from leaving described collecting chamber by described outlet; And
Porous reticulated foam, its be arranged on described in enter indoor minimum with the bubble formation entering the adjacent open end of room described in making;
The zigzag path of room is entered described in wherein said porous reticulated foam generation enters for liquid.
2. collecting tank as claimed in claim 1, wherein said porous reticulated foam is the polyurethane foam of unlimited cell.
3. collecting tank as claimed in claim 1, wherein said outlet and described fluid-air separator are arranged in the exit wall of described collecting chamber.
4. collecting tank as claimed in claim 3, under entering the base plate of room described in wherein said outlet and described fluid-air separator are arranged on.
5. collecting tank as claimed in claim 1, wherein said fluid-air separator is hydrophobic filter.
6. collecting tank as claimed in claim 1, wherein said hole is groove.
7. a Reduced pressure treatment system, it comprises:
Manifold, it is arranged on tissue site;
Tank, it has collecting chamber, entrance and exit, is connected to described manifold described inlet fluid;
Reduced pressure source, its outlet being fluidly connected to described tank, with by reduced pressure delivery extremely described collecting chamber and described tissue site, makes the fluid from described tissue site be drawn in described collecting chamber;
Fluid-air separator, itself and described outlet combine to prevent liquid from leaving described collecting chamber by described outlet; And
Porous reticulated foam, it is arranged between the inherent described entrance of described tank and described fluid-air separator to make bubble formation minimum and to prevent described tank from blocking described fluid-air separator too early.
8. system as claimed in claim 7, wherein said porous reticulated foam produces zigzag path between described entrance and described outlet.
9. system as claimed in claim 7, wherein said porous reticulated foam is the polyurethane foam of unlimited cell.
10. system as claimed in claim 7, wherein said outlet and described fluid-air separator are arranged in the exit wall of described collecting chamber.
11. systems as claimed in claim 7, under wherein said outlet and described fluid-air separator are arranged on described entrance.
12. systems as claimed in claim 7, wherein said fluid-air separator is hydrophobic filter.
13. 1 kinds of collecting tanks for using together with Reduced pressure treatment system, described tank comprises:
Collecting chamber;
Entrance, it is suitable for fluidly being connected to tissue site;
Outlet, it is suitable for fluidly being connected to Reduced pressure source;
Fluid-air separator, it is arranged near described outlet; And
Reticulated polymer foam, it is arranged between the inherent described entrance of described tank and described fluid-air separator to make bubble formation minimum and to prevent described tank from blocking described fluid-air separator too early.
14. collecting tanks as claimed in claim 13, wherein said reticulated polymer foam produces zigzag path between described entrance and described outlet.
15. collecting tanks as claimed in claim 13, wherein said outlet and described fluid-air separator are arranged in the exit wall of described collecting chamber.
16. collecting tanks as claimed in claim 15, under wherein said outlet and described fluid-air separator are arranged on described entrance.
17. collecting tanks as claimed in claim 13, wherein said fluid-air separator is hydrophobic filter.
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| CN200980102113XA CN101909669B (en) | 2008-02-29 | 2009-02-27 | A system and method for collecting exudates |
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| CN201310268181.1A Active CN103349800B (en) | 2008-02-29 | 2009-02-27 | For collecting the system and method for exudate |
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